Method of adjusting cylinders in boring-machines



UNITED sTATEs TATENT oEEIoE.

WILLIAM B. EMERY, OF ALBANY', NEW YORK.

METHOD 0F ADJUSTING CYLINDERS IN BORING-MACHINES.

Specification of Letters Patent N o. 12,437, dated February 27, 1855.

To all LU/wm, t may concern.'

Be it known that I, WILLIAM B. EMERY, of the city and county of Albany, in the State of New York, have invented a new and useful Inode of adjusting cylinders in a boring-machine for the purpose of spacing the same for both in a circular and a longitudinal direction for the boring of holes uniformly, at any desired distance apart, and in lines of holes along or aroundl the vcylinder inl straight, curved, or spiral forms;

and I do hereby declare that the following is' a full and exact description thereof, reference being had to the accompanying drawing, and to the letters of, reference marked thereon, making a part of this specification.

P is a sliding carriage. S, S, are the ways on which it slides.

O, O, are hangers in which the cylinder is hung when being operated upon.

N is a cylinder hung in position for being operated upon.

Q, is one extremity of the axis of the cylinder, the other end being covered with the hub (a) of dividing dial plate A.

A is a dividing dial plate with its hub a, a, projecting bot-h ways.

D is a set screw by which the dial plate is made fast to the axis of the cylinder.

'B is a second dial plate fitted to the inner end of the hub (a) and revolving upon it.

I, I, I, &c., are the ydividing notches in the rim of the dial plate B.

K, K, K, &c., are the dividing notches in the rim of the dial plate A.

Gr is a spring catch attached to the sliding carriage and operating in the notches I, I, I, &c.

H is a spring catch attached to the dial plate (B) and operating in the notches K, K, K, &c.

L is a ratchet attached to the slidingparriage.

` M is a pawl attached to the ways or frame in whichthe carriage slides and operating in the ratchet L.

To bore a series of spiral lines of holes around a cylinder I place the cylinder in the sliding carriage as shown, and bring the Y carriage to the extreme right of its traverse. this being t-he left extremity of the ratchet L under the pawl M. I then put on the dial plates and make them fast by the set screw D. Now the cylinder is held firmly in every direction and the boring instrument is brought down making a hole. Now if I wish to make four parallel spiral rows of holes I turn the cylinder one fourth of a revolution by the notches upon the dial plate A while the dial plate B remains stationary, being held by the catch G and bore a second hole, then another one fourth of a revolution and bore another hole and then another making four holes each of which is the first of a spiral row or line vof holes. I then move the carriage one notchr or more of the ratchet as required to space the holes longitudinally, then by the notches I I I I &c I'

revolve the cylinder any required part of a revolution (say one notch) and am ready to bore four more holes as at first. This process is repeated until the whole length wM. B. EMEEY,

Witnesses JAMES B. SANDERS,

A. V. DE WITT. 

